Custom HTML Javascript Function not found at runtime

Hi Meredydd and thanks a lot for the quick reply.
I’m going to check my code for your suggestions.
BTW I already shared a clone of the App in this other thread.
The code is there, but now the problem described in that post will prevent you to reach the point where the Javascript breaks. Too bad.
I’ll check back with a working example as soon as I can.

Thanks and BR

Edit
As I mentioned in my post, the strange thing is that it broke while I was just working inside the javascript code of the function.
Nothing changed in the call-tree.
A few lines of JS code earlier it was working (and in my currently published App it is working, but the print is too simplified), a few lines of JS code later, the caller can’t find the function anymore? Very strange.

A few